/**
 * 按钮波浪指令
 * @directive 默认方式：v-waves，如 `<div v-waves></div>`
 * @directive 参数方式：v-waves=" |light|red|orange|purple|green|teal"，如 `<div v-waves="'light'"></div>`
 */
export function wavesDirective(app) {
    app.directive('waves', {
        mounted(el, binding) {
            el.classList.add('waves-effect');
            binding.value && el.classList.add(`waves-${binding.value}`);
            function setConvertStyle(obj) {
                let style = '';
                for (let i in obj) {
                    if (obj.hasOwnProperty(i))
                        style += `${i}:${obj[i]};`;
                }
                return style;
            }
            function onCurrentClick(e) {
                let elDiv = document.createElement('div');
                elDiv.classList.add('waves-ripple');
                el.appendChild(elDiv);
                let styles = {
                    left: `${e.layerX}px`,
                    top: `${e.layerY}px`,
                    opacity: 1,
                    transform: `scale(${(el.clientWidth / 100) * 10})`,
                    'transition-duration': `750ms`,
                    'transition-timing-function': `cubic-bezier(0.250, 0.460, 0.450, 0.940)`,
                };
                elDiv.setAttribute('style', setConvertStyle(styles));
                setTimeout(() => {
                    elDiv.setAttribute('style', setConvertStyle({
                        opacity: 0,
                        transform: styles.transform,
                        left: styles.left,
                        top: styles.top,
                    }));
                    setTimeout(() => {
                        elDiv && el.removeChild(elDiv);
                    }, 750);
                }, 450);
            }
            el.addEventListener('mousedown', onCurrentClick, false);
        },
        unmounted(el) {
            el.addEventListener('mousedown', () => { });
        },
    });
}
/**
 * 自定义拖动指令
 * @description  使用方式：v-drag="[dragDom,dragHeader]"，如 `<div v-drag="['.drag-container .el-dialog', '.drag-container .el-dialog__header']"></div>`
 * @description dragDom 要拖动的元素，dragHeader 要拖动的 Header 位置
 * @link 注意：https://github.com/element-plus/element-plus/issues/522
 * @lick 参考：https://blog.csdn.net/weixin_46391323/article/details/105228020?utm_medium=distribute.pc_relevant.none-task-blog-baidujs_title-10&spm=1001.2101.3001.4242
 */
export function dragDirective(app) {
    app.directive('drag', {
        mounted(el, binding) {
            if (!binding.value)
                return false;
            const dragDom = document.querySelector(binding.value[0]);
            const dragHeader = document.querySelector(binding.value[1]);
            dragHeader.onmouseover = () => (dragHeader.style.cursor = `move`);
            function down(e, type) {
                // 鼠标按下，计算当前元素距离可视区的距离
                const disX = type === 'pc' ? e.clientX - dragHeader.offsetLeft : e.touches[0].clientX - dragHeader.offsetLeft;
                const disY = type === 'pc' ? e.clientY - dragHeader.offsetTop : e.touches[0].clientY - dragHeader.offsetTop;
                // body当前宽度
                const screenWidth = document.body.clientWidth;
                // 可见区域高度(应为body高度，可某些环境下无法获取)
                const screenHeight = document.documentElement.clientHeight;
                // 对话框宽度
                const dragDomWidth = dragDom.offsetWidth;
                // 对话框高度
                const dragDomheight = dragDom.offsetHeight;
                const minDragDomLeft = dragDom.offsetLeft;
                const maxDragDomLeft = screenWidth - dragDom.offsetLeft - dragDomWidth;
                const minDragDomTop = dragDom.offsetTop;
                const maxDragDomTop = screenHeight - dragDom.offsetTop - dragDomheight;
                // 获取到的值带px 正则匹配替换
                let styL = getComputedStyle(dragDom).left;
                let styT = getComputedStyle(dragDom).top;
                // 注意在ie中 第一次获取到的值为组件自带50% 移动之后赋值为px
                if (styL.includes('%')) {
                    styL = +document.body.clientWidth * (+styL.replace(/\%/g, '') / 100);
                    styT = +document.body.clientHeight * (+styT.replace(/\%/g, '') / 100);
                }
                else {
                    styL = +styL.replace(/\px/g, '');
                    styT = +styT.replace(/\px/g, '');
                }
                return {
                    disX,
                    disY,
                    minDragDomLeft,
                    maxDragDomLeft,
                    minDragDomTop,
                    maxDragDomTop,
                    styL,
                    styT,
                };
            }
            function move(e, type, obj) {
                let { disX, disY, minDragDomLeft, maxDragDomLeft, minDragDomTop, maxDragDomTop, styL, styT } = obj;
                // 通过事件委托，计算移动的距离
                let left = type === 'pc' ? e.clientX - disX : e.touches[0].clientX - disX;
                let top = type === 'pc' ? e.clientY - disY : e.touches[0].clientY - disY;
                // 边界处理
                if (-left > minDragDomLeft) {
                    left = -minDragDomLeft;
                }
                else if (left > maxDragDomLeft) {
                    left = maxDragDomLeft;
                }
                if (-top > minDragDomTop) {
                    top = -minDragDomTop;
                }
                else if (top > maxDragDomTop) {
                    top = maxDragDomTop;
                }
                // 移动当前元素
                dragDom.style.cssText += `;left:${left + styL}px;top:${top + styT}px;`;
            }
            /**
             * pc端
             * onmousedown 鼠标按下触发事件
             * onmousemove 鼠标按下时持续触发事件
             * onmouseup 鼠标抬起触发事件
             */
            dragHeader.onmousedown = (e) => {
                const obj = down(e, 'pc');
                document.onmousemove = (e) => {
                    move(e, 'pc', obj);
                };
                document.onmouseup = () => {
                    document.onmousemove = null;
                    document.onmouseup = null;
                };
            };
            /**
             * 移动端
             * ontouchstart 当按下手指时，触发ontouchstart
             * ontouchmove 当移动手指时，触发ontouchmove
             * ontouchend 当移走手指时，触发ontouchend
             */
            dragHeader.ontouchstart = (e) => {
                const obj = down(e, 'app');
                document.ontouchmove = (e) => {
                    move(e, 'app', obj);
                };
                document.ontouchend = () => {
                    document.ontouchmove = null;
                    document.ontouchend = null;
                };
            };
        },
    });
}
